I can tell you one thing for certain - moving my swap disk OFF my main drive (which is my windows drive, my games drive, and my application drive - partitioned into three partitions) and on to a ATA133 RAID 0 10,000 RPM drive has improved not just Poser response time, but render time also. I have lost a good 10minutes off rendering complicated things that were taking almost 40-50 minutes. So I'm holding off on the upgrade on my system like I had originally planned until I'm in a bitter frame of mind to upgrade again. The most important thing is - I can put a number of items into a poser 5 scene now and it doesn't kill the system by making the navigation very very slow. I noticed before that when I put more then 3 v2's into a scene it would get really slow when turning the dails, funny enough just moving the swap file and giving it a set size on the drive that does nothing while I'm doing poser stuff has improved the preformance of Poser a lot! So that is what I'm pretty much thinking is the problem - Poser 5 (at least) relys on Swap file a LOT MORE then claimed by e-frontier. I have one gig and it is still using the swap file even when not rendering if you have a complicated scene (and that is a boot up which has almost no background programs running). Thanks for the information though destro75 it helps a lot! :) WiNC